Endless Chain Only Patents (Class 56/111)
  • Patent number: 6516599
    Abstract: A grain harvesting mechanism having a pair of parallel chains running in vertically spaced planes is used to remove the ears of grain from the stalks. The spacing of the planes create a deeper channel for the ears to be carried in, thus preventing some spillage. The chains also run at differing speeds for removal and delivery of the ears.
    Type: Grant
    Filed: December 10, 1999
    Date of Patent: February 11, 2003
    Inventor: David Clarke
  • Patent number: 6155033
    Abstract: A large capacity, self-propelled walk-behind power tool, such as a lawn mower, employs gear-operated transmissions for independently driving each drive wheel. The transmission output shafts connect directly with the drive wheels, and clutch elements for use with the respective transmissions operably engage an input pulley to the transmission rather than an output pulley. The drive wheels are directly connected to the transmissions and the location of the clutching elements is within the periphery of the respective belts. The drive assembly is enclosed by the drive deck.
    Type: Grant
    Filed: June 30, 1998
    Date of Patent: December 5, 2000
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Jeff A. Wians, Daniel J. Turk
  • Patent number: 6116005
    Abstract: A method for harvesting crops, such as rows of corn, using a harvester, which provides independent drives and independent controls for gathering belts, and independent drives and independent controls for knife rolls used on the corn harvester. The independent drives and independent controls allow the speed of the gathering belts or the knife rolls to be varied without affecting other harvester components. The independent speed control between the gathering belts and the knife rolls, allow for better harvesting in various crop conditions. The harvester also includes a set up for changing the angle of the corn head to allow better harvesting under varying conditions.
    Type: Grant
    Filed: March 8, 1999
    Date of Patent: September 12, 2000
    Assignee: FMC Corporation
    Inventor: Neal C. Chamberlain
  • Patent number: 6098385
    Abstract: A large capacity, self-propelled walk-behind power tool, such as a lawn mower, employs gear-operated transmissions for independently driving each drive wheel. Control handles are connected to idler pulley levers and brake levers to control the movement of the driving wheels. A constant input rate to the control handles results in a variable output rate to the idler pulley levers and the brake levers.
    Type: Grant
    Filed: June 30, 1998
    Date of Patent: August 8, 2000
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventor: Daniel J. Turk
  • Patent number: 6089005
    Abstract: A combination tow and pressure relief valve for use in a hydraulic fluid circuit used in a hydraulically driven wide area lawn mower. The valve includes a cylindrical valve body having a hexagonal head. A slideable valve tip with a shank and a valve head has its shank slidably mounted within the valve body. The valve tip is biased by a spring to move in a direction away from the hex head. In operation, the valve is inserted into a suitable chamber placed in series with a bypass passage. The valve tends to block the bypass passage under steady state conditions. When a surge in hydraulic pressure occurs, as would occur in response to operator input or at startup, the hydraulic fluid overcomes the bias of the spring and urges the valve tip away from the otherwise blocked orifice which links the bypass passage to the chamber. Opening the orifice tends to diminish the magnitude of the pressure peak and helps eliminate jerky starts of the mower.
    Type: Grant
    Filed: December 3, 1998
    Date of Patent: July 18, 2000
    Assignee: The Toro Company
    Inventor: Jeffrey B. Kallevig
  • Patent number: 6082083
    Abstract: A handle for an outdoor power equipment unit, such as a lawn mower, includes a control system for allowing the user to manually vary the ground speed of the mower provided by a self propel system. The control system includes a handle grip on the handle that slides up and down relative to a lower portion of the handle. As the handle grip slides down, the ground speed increases. As the handle grip slides up, the ground speed decreases. A grab member can be used to allow the operator to have leverage in pushing the handle grip down.
    Type: Grant
    Filed: September 18, 1998
    Date of Patent: July 4, 2000
    Assignee: The Toro Company
    Inventors: Philip G. Stalpes, Larry W. Schmidt, Richard A. Thorud, Henry B. Tillotson, III, Nathan J. Friberg
  • Patent number: 5924269
    Abstract: An improved row crop header, suitable for mounting on a harvesting machine, for harvesting crops planted in rows. The improved row crop header has a plurality of row units mounted on a frame of the row crop header such that each row unit has two gatherers placed in corresponding offsetting planes. The adjacent gatherers of two adjacent row units are in offsetting planes to permit the overlap of the adjacent gatherers. This overlap of the adjacent gatherers permits the row units to be arranged closer together allowing the instant row crop header to harvest narrower crop rows than the existing corn heads. Also provided is an improved method for harvesting narrow crop rows by providing a row crop header configured so that the adjacent row units of the row crop header are arranged closer together than in the existing corn heads.
    Type: Grant
    Filed: November 22, 1996
    Date of Patent: July 20, 1999
    Assignee: Case Corporation
    Inventor: Richard E. McMillen
  • Patent number: 5921070
    Abstract: The invention provides a harvester to harvest crops such as rows of corn. The invention provides independent drives and independent controls for gathering belts, and independent drives and independent controls for knife rolls used on a corn harvester. The independent drives and independent controls allow the speed of the gathering belts or the knife rolls to be varied without affecting other harvester components. The independent speed control between the gathering belts and the knife rolls, allow for better harvesting in various crop conditions. The invention also provides a means for changing the angle of the corn head to allow better harvesting under varying conditions.
    Type: Grant
    Filed: June 13, 1997
    Date of Patent: July 13, 1999
    Assignee: FMC Corporation
    Inventor: Neal C. Chamberlain
  • Patent number: 5913802
    Abstract: The invention is a self-propelled drivewheel steering power mower which can be operated in a standing or sitting position, including a pair of variable flow hydrostatic pumps with tiltable swash plates, each of which drives one of a pair of drivewheels. A vertically mounted steering shaft is rotatably supported on the mower for rotation about an axis concentric with said shaft; and a T-shaped steering handle bar is rotatably journaled to the end of said steering shaft for twisting about an axis concentric with said handle bar.
    Type: Grant
    Filed: June 6, 1997
    Date of Patent: June 22, 1999
    Assignee: Excel Industries, Inc.
    Inventors: Paul W. Mullet, Elmer D. Voth, Royce A. Steinert, Harlan J. Bartel
  • Patent number: 5911673
    Abstract: An improved row crop header for harvesting crops planted in rows. The improved row crop header has a plurality of row units mounted on a frame such that each row unit has at least one gatherer operating in a gatherer plane that is oblique to a row unit plane that passes through the structure of the row unit. The reduced projected width of the gatherer along the row unit plane reduces the width of a row unit. The adjacent gatherers of two adjacent row units overlap as they operate in offset planes. The overlap permits the row units to be arranged closer together on the frame. The closer arrangement together with the reduced width of the row units allows the row crop header to harvest narrower crop rows than the existing corn heads. A method is also provided that uses the improved row crop header to harvest narrower crop rows than in the past.
    Type: Grant
    Filed: December 13, 1996
    Date of Patent: June 15, 1999
    Assignee: Case Corporation
    Inventor: Orlin W. Johnson
  • Patent number: 5911672
    Abstract: A riding lawn mower is provided that has an engine, a device that requires control and a vacuum actuated control mechanism for controlling the device. The vacuum actuated control mechanism includes a vacuum actuator having first and second chambers separated by a movable membrane, first connecting means for operatively connecting the vacuum actuator to the device, vacuum means for providing a vacuum to the vacuum actuator, activating means for selectively activating the vacuum actuator and securing means for securing the vacuum actuator in place. The securing means also secures the device in place.
    Type: Grant
    Filed: December 19, 1997
    Date of Patent: June 15, 1999
    Assignee: MTD Products Inc.
    Inventors: Axel Schaedler, John Robertson
  • Patent number: 5884464
    Abstract: An improved row crop header for harvesting crops planted in rows. The improved row crop header has a plurality of row units mounted on a frame such that the adjacent gatherers of two adjacent row units are in offset planes to permit the overlap of the adjacent gatherers. This overlap permits the row units to be arranged closer together on the frame allowing the row crop header to harvest narrower crop rows than existing corn heads. Also provided is a method that uses the improved row crop header to harvest narrower crop rows than in the past.
    Type: Grant
    Filed: December 12, 1996
    Date of Patent: March 23, 1999
    Assignee: Case Corporation
    Inventor: Richard E. McMillen
  • Patent number: 5881542
    Abstract: The row crop header for a harvesting machine includes a frame and a first row unit supported by the frame in a row unit plane. The first row unit includes a first gatherer operating in a first gatherer plane oblique to the row unit plane and a second gatherer operating in a second gatherer plane parallel to the first gatherer plane and oblique to the row unit plane.
    Type: Grant
    Filed: August 14, 1997
    Date of Patent: March 16, 1999
    Assignee: Case Corporation
    Inventors: Paul G. Togami, Joachim Horsch
  • Patent number: 5878560
    Abstract: A row crop header for a harvesting machine includes a frame and a row unit supported by the frame in a row unit plane. The row unit includes a gatherer operating in a gatherer plane oblique to the row unit plane.
    Type: Grant
    Filed: January 9, 1997
    Date of Patent: March 9, 1999
    Assignee: Case Corporation
    Inventor: Orlin W. Johnson
  • Patent number: 5699656
    Abstract: A tracked agricultural combine vehicle for harvesting, hulling and sorting grain includes a grain working section driven via a tension roller clutch controlled power transmission belt and further including integrated control means for left and right side propulsion track assemblies wherein individual track steering commands in the form of differential track speed control are derived from a common steering wheel input; vehicle speed is controlled by a single input means which controls the speed of both tracks.
    Type: Grant
    Filed: October 1, 1996
    Date of Patent: December 23, 1997
    Assignee: Yanmar Agricultural Equipment Co., Ltd.
    Inventors: Kenji Hamada, Toshinori Kirihata, Keita Kamikubo, Mikio Takagi, Masami Nakamura, Youzaburo Narahara, Koichi Kawasaki
  • Patent number: 5518079
    Abstract: To control the speed of a lawn mower, the speed of the lawn mower is changed in a forward direction along a longitudinal plane, resulting in a tendency to turn because of different speed characteristics of the right and left wheel drives. The speed is corrected by lateral movement of a control lever to increase the speed of one wheel motor and decrease the speed of the other wheel motor. When turning, if the lawn mower is not aligned along the longitudinal axis after the turn, the deviation is indicated in the position of the control lever to the right or left. This can be corrected by momentarily applying a motor speed change to one of said right and left hydraulic motors while observing the control lever until the control lever is centered in the longitudinal plane, whereby the speed of the lawn mower will be aligned along the longitudinal plane.
    Type: Grant
    Filed: December 16, 1994
    Date of Patent: May 21, 1996
    Assignee: F. D. Kees Manufacturing, Co.
    Inventor: Terry L. Zvolanek
  • Patent number: 5502957
    Abstract: There is disclosed an electric mower, preferably of the riding type, in which microcontrollers are interposed between quadrature controllers and motors operating each of the drive wheels. The microcontrollers are programmed to provide pulse width modulated current drive control and braking. Other functions are controlled electronically to assure operations that are not harmful to the operator, the motors, the battery or the lawn being mowed.
    Type: Grant
    Filed: March 29, 1995
    Date of Patent: April 2, 1996
    Inventor: Charles W. Robertson
  • Patent number: 5375674
    Abstract: A control for a lawn and garden vehicle, such control utilizing a "U" shaped main direction control pivotally mounted to the handlebars. The control being physically interconnected to a transmission such that movement of the direction control forward causes the vehicle to move forward, and movement of the direction control backward causes the vehicle to move in reverse with the control being spring biased into a central neutral position.
    Type: Grant
    Filed: April 13, 1993
    Date of Patent: December 27, 1994
    Assignee: MTD Products Inc.
    Inventor: Tim Peter
  • Patent number: 5355661
    Abstract: A lawn mower for use in a walking mode and a riding mode. Drive of an engine is transmitted in varied speeds to rear drive wheels through stepless transmissions. The transmissions are controllable a first shift member accessible to a driver walking behind the lawn mower, and a second shift member accessible to the driver seated on a driver's seat. Operation of one of the shift members is prohibited when the other shift member is operative. The first shift member is connected to the transmissions through a drive link, a driven link, and a pin removably inserted into bores formed in the two links. A prohibiting device is movable to a position to prevent the pin from extending into one of the bores.
    Type: Grant
    Filed: May 17, 1993
    Date of Patent: October 18, 1994
    Assignee: Kubota Corporation
    Inventor: Yoshio Tomiyama
  • Patent number: 5353578
    Abstract: A lawn mower is provided with a speed control mechanism which is controlled by a single cable. A return spring, floating power transfer shaft, and biasing assembly provide a speed control mechanism which is effective in design and operation.
    Type: Grant
    Filed: March 2, 1993
    Date of Patent: October 11, 1994
    Assignee: Fuqua Industries, Inc.
    Inventors: Robert W. Irby, Richard A. Schaff
  • Patent number: 5307612
    Abstract: A lawn mower for use in a walking mode and a riding mode, having a chassis frame, an engine mounted on a rearward position of the chassis frame, front wheels, driven rear wheels, transmissions for transmitting drive from the engine to the rear wheels after varying speed of the drive, a grass cutting unit suspended from the chassis frame, a driver's seat mounted on the chassis frame, and a handle post supporting control levers for controlling the transmissions. The handle post is pivotable between a first position for the walking mode in which the control levers are disposed rearwardly of the chassis frame, and a second position for the riding mode in which the control levers are disposed adjacent the driver's seat. The handle post includes a vertical post portion extending laterally of the lawn mower, and a horizontal post portion curved from the vertical post portion to extend transversely of the lawn mower. The control levers are provided on the horizontal post portion.
    Type: Grant
    Filed: March 12, 1993
    Date of Patent: May 3, 1994
    Assignee: Kubota Corporation
    Inventors: Yoshio Tomiyama, Junichi Kitamura
  • Patent number: 5247784
    Abstract: A walking operator type lawn mower having stepless transmissions allocated to right and left rear wheels for changing speed of engine drive and outputting the drive to the right and left rear wheels, respectively, whereby the right and left rear wheels may be driven at different speeds. Right and left control members operable by a speed control lever frictionally fixable to a selected position are interlocked to change speed arms through springs, respectively. The change speed arms are pivotable, following operation of the shift levers, for controlling change speed rates of the stepless transmissions. The change speed arms are also operable by a pair of right and left auxiliary levers to move toward a backward drive position regardless of speed setting position of the speed control lever. A constant speed straight cruising run is obtained by retaining the speed control lever in a selected position to operate the change speed arms of the right and left transmissions substantially the same amount.
    Type: Grant
    Filed: April 8, 1992
    Date of Patent: September 28, 1993
    Assignee: Kubota Corporation
    Inventors: Junichi Kitamura, Yoshio Tomiyama, Hiroshi Oshima
  • Patent number: 5138825
    Abstract: A riding mower is provided having a generally conventional engine, seat, frame, cutting deck and hydrostatic transmission. The cutting deck may be vertically adjusted for a plurality of cutting height settings, and may be locked in its uppermost setting and returned to the pre-selected cutting height, by selective operation of a foot-operated pedal. Linkage connects the pedal to the deck and to a variable-height adjustment link. A transmission speed control includes a handle protruding upwardly adjacent the seat, connected to a transverse control rod with a distal end operatively secured to the conventional speed adjustment mechanism of the transmission. Positioned adjacent the distal end of the control rod is a friction-generating device which engages the rod and prevents unintentional movement thereof. A grass collection bag is included with a blower mounted on the cutting deck for providind an enhanced airflow from the cutting deck through the duct leading to the bag.
    Type: Grant
    Filed: December 11, 1990
    Date of Patent: August 18, 1992
    Assignee: Noma Outdoor Products, Inc.
    Inventors: Harlin J. Trefz, Daniel T. Hergatt, Keith A. Mosley, Douglas A. Pohl
  • Patent number: 5127215
    Abstract: An extra-wide self-propelled lawn mower employs twin hydrostatic transmissions to power the left and right rear drive wheels that are situated behind a forward moving deck. Hydrostatic drives have infinitely variable adjustment speed from reverse through neutral, to a maximum forward speed. There are also independent left and right control levers mounted adjacent the hand grips that are coupled through linkages to control levers for the respective hydrostatic transmissions. An engine has its center of gravity situated behind the drive wheel axles to balance the weight of the moving deck. Spring returns associated respectively with the two hydrostatic transmissions return the same to the neutral position when an operator releases the respective control levers.
    Type: Grant
    Filed: September 6, 1990
    Date of Patent: July 7, 1992
    Assignee: Ferris Industries, Inc.
    Inventor: Philip H. Wenzel
  • Patent number: 5077959
    Abstract: An extra-wide self-propelled lawn mower employs twin hydrostatic transmissions to power left and right drive wheels situated behind a forward mowing deck. There are left and right primary speed control levers adjacent hand grips on the mower hand assembly. These have linkages that include a common pivot shaft and respective spring couplings to control the actuator arms of the hydrostatic transmissions. Secondary speed control levers, in the form of brake levers, are mounted adjacent the right and left hand grips and are non-resiliently coupled to the hydrostatic transmission actuators arms. The secondary levers are squeezed to override the primary speed control and slow the respective transmission for braking or to effect a turn, pivoting about the inside wheel. Squeezing the secondary control lever completely will cause the wheel on that side to reverse, effecting a pivoting at the center of the mower.
    Type: Grant
    Filed: March 25, 1991
    Date of Patent: January 7, 1992
    Assignee: Ferris Industries, Inc.
    Inventor: Philip H. Wenzel
  • Patent number: 5062257
    Abstract: A grass mowing or cutting machine suitable for towing by general application vehicles is disclosed. The machine is operated by its advance and comprises a wheeled frame having a horizontal cutting disc which rotates about a vertical axis. A drive mechanism connects the cutting disc to the wheel(s) of the wheeled frame so that when the mowing apparatus is pulled or pushed, the cutting disc will be rotated by the rotation of the wheel(s). A gearing mechanism is typically provided between the cutting disc and the wheel(s). The cutting disc is preferably of web-like construction and includes aerodynamics portions to exert a downward force on the disc as it rotates through the air. The moving apparatus is designed for relatively high speed towing.
    Type: Grant
    Filed: July 9, 1990
    Date of Patent: November 5, 1991
    Inventor: William M. Morris
  • Patent number: 5052135
    Abstract: A convertible grass cutting and snow blowing machine which is supported on wheels and displaced on a surface where grass is to be cut or snow removed by a user controlling the machine from a handlebar. An engine is connected to the rotor housing which serves as a chassis, and has a drive shaft which is coupled to a rotor to impart axial rotation to the rotor. The rotor is supported between opposed side walls of a rotor housing, and is provided with at least two cutting blades secured longitudinally and spaced apart. The blades extend at a uniform height from the central axis of the rotor. Each of the blades defines a bow-shaped curve to direct grass cuttings or snow toward a mid-length region of the rotor when the rotor is rotatably driven and further, in combination with the rotor, impart a centrifugal force to direct the grass cuttings rearward toward an exit chute or snow upward toward a snow chute.
    Type: Grant
    Filed: March 14, 1990
    Date of Patent: October 1, 1991
    Inventor: Andre G. Fontaine
  • Patent number: 4967544
    Abstract: The present invention is directed to a speed controller system for the gathering unit of a harvesting assembly wherein the speed is controlled as a ratio of the ground speed of the harvesting machine. The system is provided with an electronic controller having a ground speed sensor and a speed sensor for the gathering units. The operator through a ratio selector selects the desired speed ratio and the controller controls the speed of the gathering unit accordingly. The controller can be ised with different harvesting assemblies such as a platform having a reel or belt pickup gathering unit; or a row crop header having a conventional row crop gathering unit or a corn picker row unit. The controller is also provided with a diagnostic routine for flagging problem areas with the system. The flagged problem areas are assigned a diagnostic code which is displayed in a defined order.
    Type: Grant
    Filed: December 22, 1989
    Date of Patent: November 6, 1990
    Assignee: Deere & Company
    Inventors: Duane H. Ziegler, Charles P. Barbaro, D. Keith Dewey, Steven L. Wildemuth, Frederick W. Nelson, Kenneth D. Friend, Terence D. Pickett
  • Patent number: 4967543
    Abstract: A lawn mower has a hydraulic motor mounted on each drive wheel and each motor is independently driven by a separate pump. Each pump includes a control lever for regulating fluid pressure and flow direction so that each wheel may be driven independently in the forward and reverse directions and at varying speeds. A speed control index is mounted on one side of the mower for releasably setting and maintaining the speed control levers in a plurality of equal forward speed positions so that the operator can preset the maximum forward speed. In addition, an individual speed control lever is mounted on each handgrip and each is independently coupled to one of the control levers for individually adjusting each wheel for speeds less than the preset maximum or for setting either wheel drive pump in neutral or reverse. A neutral control assembly returns the pump control levers to a neutral position when the control levers are moved into neutral.
    Type: Grant
    Filed: October 10, 1989
    Date of Patent: November 6, 1990
    Assignee: Scag Power Equipment, Inc.
    Inventors: Dane T. Scag, David Sugden
  • Patent number: 4953346
    Abstract: A haymaking machine provided with at least one rotor (5) driven in rotation has a drive housing (12) equipped with two gears which mesh with one another and have different diameters and different numbers of teeth. Each of the gears is connected to a shaft extending out of housing (12) and is able to be driven from power takeoff shaft (11) of the tractor. A third gear is provided with a driven shaft (23) and is able to be connected to rotor (5). The third gear able to be meshed with one or the other of the two above-mentioned gears.
    Type: Grant
    Filed: May 22, 1989
    Date of Patent: September 4, 1990
    Assignee: Kuhn S.A.
    Inventor: Jerome Aron
  • Patent number: 4939892
    Abstract: There is disclosed a gait type mower constructed such that a mowing unit is mounted on a front part of a vehicle, driving wheels are provided at a rear part thereof, and handles are installed backwards. An engine and a variable speed gear interlocking therewith are loaded on the vehicle. The power is imparted from output shafts of the gear via belt transmission mechanisms to the driving wheels. An improved mower is arranged such that: the engine is placed in front of the axle, while the variable speed gear is placed behind the axle; the output shafts are positioned substantially upwardly of the axle in front of the gear; and the belt transmission mechanisms are disposed in the up-and-down directions.
    Type: Grant
    Filed: August 4, 1989
    Date of Patent: July 10, 1990
    Assignee: Kubota Ltd.
    Inventor: Masami Kawasaki
  • Patent number: 4920734
    Abstract: A self-propelled lawn mower employs a hydrostatic transmission and differential to power rear drive wheels which are situated behind a forward mowing deck. The hydrostatic drive has infinitely variable adjustment of speed from reverse, through neutral, to a maximum forward speed. There are independent disc brakes for the drive wheels, with right and left brake levers situated adjacent the operator hand grips. An engine has its center of gravity behind the drive wheel shaft to balance the weight of the mowing deck. Left and right thumb-operated control levers are rockably mounted on the handle bar assembly, adjacent the inboard side of the right and left hand grips. This arrangement permits one-hand control of the transmission speed with either hand, while actuating the respective brake lever with the same hand, making one-hand brake-turning of the mower possible. The engine output shaft has a pulley connected by belt drives to the blades and to the hydrostatic drive.
    Type: Grant
    Filed: September 15, 1989
    Date of Patent: May 1, 1990
    Assignee: Ferris Industries, Inc.
    Inventor: Philip H. Wenzel
  • Patent number: 4879867
    Abstract: A self-propelled lawnmower employs a hydrostatic transmission and differential to power rear drive wheels which are situated behind a forward mowing deck. The hydrostatic drive has infinitely variable adjustment of speed from reverse, through neutral, to a maximum forward speed. There are independently actuated disc brakes for the drive wheels, with right and left brake levers situated adjacent the operator hand grips. A vertical shaft engine is situated with its center of gravity behind the drive wheel shaft to balance the weight of the mowing deck. The operator can control the speed and direction of the mower without removing his hands from the hand grips. By selecting actuation of the disc brakes, the machine can be effortlessly turned without a reduction in speed. The engine output shaft has pulleys connected by drive belts to the blades and to the hydrostatic drive.
    Type: Grant
    Filed: November 28, 1988
    Date of Patent: November 14, 1989
    Assignee: Ferris Industries, Inc.
    Inventor: Philip H. Wenzel
  • Patent number: 4835949
    Abstract: A self-propelled implement such as a lawn mower comprising a frame having a rearward end, a drive wheel which supports the frame for movement over the ground, an engine supported by the frame, a handle connected to the frame and extending rearwardly therefrom, the handle including a rearmost portion adapted to be held by a mower operator, and a transmission operably connected between the engine and the drive wheel for effecting sustained rotation of the drive wheel at any speed within a speed range between zero and substantially above zero.
    Type: Grant
    Filed: June 29, 1987
    Date of Patent: June 6, 1989
    Assignee: Outboard Marine Corporation
    Inventor: Carl E. Seyerle
  • Patent number: 4787195
    Abstract: A self-propelled lawnmower having a hydrostatic transmission and a differential mechanism to power the rear drive wheels which are situated behind a forward mowing deck. The hydrostatic drive has infinitely variable adjustment of speed from reverse, through neutral, to a maximum forward speed. There are independently actuated disc brakes for the rear drive wheels, with right and left brake levers situated adjacent the operator hand grips. The engine is situated with its center of gravity behind the drive wheel shaft to balance the weight of the mowing deck. The operator can control the speed and direction of the mower without removing his hands from the hand grips. By selecting actuation of the disc brakes, the machine can be effortlessly turned without a reduction in speed.
    Type: Grant
    Filed: June 17, 1987
    Date of Patent: November 29, 1988
    Assignee: Ferris Industries, Inc.
    Inventor: Philip H. Wenzel
  • Patent number: 4698048
    Abstract: A drive mechanism for a small tractor combines a variable speed V-belt transmission with a forward-reverse gear transmission wherein both transmission are controlled by natural movement of a single control lever within a gate means. An optional second forward range of speeds is also engaged by this same single lever. The normal range of ratios afforded by a two V-belt variable speed transmission is extended by an automatic "overdrive" means that also replaces any belt tension maintenance means.
    Type: Grant
    Filed: April 4, 1986
    Date of Patent: October 6, 1987
    Inventor: Kenneth P. Rundle
  • Patent number: 4689939
    Abstract: A self-propelled implement such as a lawn mower comprising a frame having a rearward end, a drive wheel which supports the frame for movement over the ground, an engine supported by the frame, a handle connected to the frame and extending rearwardly therefrom, the handle including a rearmost portion adapted to be held by a mower operator, and a transmission operably connected between the engine and the drive wheel for effecting sustained rotation of the drive wheel at any speed within a speed range between zero and substantially above zero.
    Type: Grant
    Filed: January 9, 1986
    Date of Patent: September 1, 1987
    Assignee: Outboard Marine Corporation
    Inventor: Carl E. Seyerle
  • Patent number: 4671050
    Abstract: A mowing machine comprises cutting members which are rotatable about upwardly extending axes and drivable via a change-speed mechanism which enables their speed of rotation to be adjusted, for example to suit the characteristics of the crop being mown. The machine also has crushing member driven via a mechanism having replaceable gears for adjusting speed, said crushing member mounted behind the cutting members to rotate about a horizontal axis and having an adjustable head.
    Type: Grant
    Filed: March 15, 1985
    Date of Patent: June 9, 1987
    Inventor: Cornelis van der Lely
  • Patent number: 4483128
    Abstract: In a drive system for the threshing cylinder of a combine harvester, a conventional infinitely variable V-belt drive, is combined with a two-speed final drive assembly. In the final drive assembly, an epicyclic gear train is housed within the body of a driven sheave journaled on the cylinder shaft. For a direct drive mode, the sheave is coupled to the shaft by way of a flange mounted non-rotatably on the shaft. A sun gear of the gear train is controllable externally of the sheave body and may be non-rotatably secured relative to the combine body for a cylinder speed reducing mode. The combine cylinder speed is therefore infinitely variable within, selectively, either an upper range or a lower range.
    Type: Grant
    Filed: July 6, 1982
    Date of Patent: November 20, 1984
    Assignee: Deere & Company
    Inventor: Robert W. Hawkins
  • Patent number: 4455812
    Abstract: A self-propelled combine (11) includes a drive train driven by the engine (16) which includes a transverse power shaft (47) by which a header (24), a threshing rotor (34), a bin unloading mechanism (88), the change speed transmission (76) and the cleaning mechanism are driven. The power transmitting components of the shaft assembly, including a double electric clutch (44), are carried by the end portions (46, 161) of the transverse shaft (47) at the laterally outer sides of the side walls (51, 52) on which the shaft (47) is supported. The double electric clutch (44) includes air circulating means (101, 102 and 93-98) and is removable from the shaft (47) upon removal of a cap screw (118).
    Type: Grant
    Filed: January 24, 1983
    Date of Patent: June 26, 1984
    Assignee: Allis-Chalmers Corp.
    Inventor: Larry R. James
  • Patent number: 4400930
    Abstract: A harvester in the form of a self-propelled combine (11) has a crop header (24) and conveying means (31, 32) feeding crop material to a threshing rotor (34). The speed of rotation of the rotor (34) is adjustable by changing the speed of a variable speed belt drive (50) in the drive train from an engine (16) to the threshing rotor (34). The variable speed belt drive (50) is of a type whose speed ratio cannot be changed unless it is running. A special rotor clutch (71) is interposed between the variable speed belt drive (50) and the threshing rotor (34) to permit the variable speed drive to be disconnected from the threshing rotor. Thus, when the rotor (34) stops rotating because of excess crop material, the rotor clutch (71) may be operated to break the power train between the variable speed belt drive (50) and the threshing rotor (34) and the variable speed belt drive (50) may be run and adjusted to a lower output speed.
    Type: Grant
    Filed: May 10, 1982
    Date of Patent: August 30, 1983
    Assignee: Allis-Chalmers Corporation
    Inventors: Michael L. Huhman, Larry R. James
  • Patent number: 4327544
    Abstract: A combine having a header on the forward end of it which operates to cut and deliver crop material to an elevator in a feeder house over which a cab is provided at an elevated location. The elevator delivers the material to the threshing mechanism of the combine. The engine of the combine is connected by a belt drive to a vari-drive supported by the feeder house and a yoke on the vari-drive moves one flange of the adjustable sheave of the vari-drive relative to the other. An auxiliary motor actuates the yoke by driving a rotatable screw and a Bowden cable is connected between a pivoted speed-indicating needle on a dial mounted in view of the cab and the follower of the yoke which is actuated by the screw which is operated to move the yoke to change the adjustable sheave and vary the speed of operation of the combine.
    Type: Grant
    Filed: May 6, 1981
    Date of Patent: May 4, 1982
    Assignee: Sperry Corporation
    Inventors: James W. McDuffie, Larimer J. Knepper
  • Patent number: 4322934
    Abstract: The present invention is directed to a lawn mower wherein a lawn mower body frame includes a motor and an operatively connected transmission. The lawn mower motor body frame is supported by front and rear wheels. At least the rear wheels are independently supported on separate shafts which are rotatably disposed with respect to the lawn mower body frame. Pulleys are positioned concentrically on each of the separate shafts in opposing, spaced apart relationship to define a gap therebetween. A belt is disposed in said gap and operatively connected to the motor through the transmission to impart rotation to the rear wheels. The pulleys, the separate shafts, and the rear wheels are positioned relative to each other to permit slippage therebetween to facilitate a change in the direction of the lawn mower.
    Type: Grant
    Filed: January 31, 1980
    Date of Patent: April 6, 1982
    Assignee: Fuso Keigokin Co., Ltd.
    Inventor: Hachiro Doi
  • Patent number: 4237991
    Abstract: A self-propelled rotary lawn mower including a multi-speed transmission comprising a drive shaft which is driven by a prime mover and is rotatably mounted on a mower frame in parallel relationship to the rear wheel axle. Also included is a drive mounted on at least one end portion of the drive shaft for selectively engaging the outer periphery of one of the mower rear wheels which serves as a drive wheel. The drive includes a first or low-speed drive member which is affixed on the drive shaft and has a first drive surface and a second or high-speed drive member which has a second drive surface larger in diameter than the first drive surface.
    Type: Grant
    Filed: December 8, 1978
    Date of Patent: December 9, 1980
    Assignee: Outboard Marine Corporation
    Inventor: Eugene H. Schlapper
  • Patent number: 4176560
    Abstract: A variable speed drive for a riding lawn mower or the like has a double pulley variable speed sheave assembly coupled between a driving pulley and a driven pulley by first and second V-belts, respectively. The sheave assembly is carried at one end of a bell crank which is centrally pivoted to one end of a pivot arm. The pivot arm is pivotally connected to the vehicle frame and is biased to urge the sheave assembly toward an operating position with the belts under driving tension. A mechanical control linkage is connected to the other end of the bell crank, and is operable to shift the sheave assembly with respect to the driving and driven pulley to alter the sheave assembly drive ratio in a manner such that belt tension varies with variations in operating speed. The control linkage is operable to move the sheave assembly between a stopped position with both belts declutched and a range of low to high speed operating positions, and is springably biased to urge the sheave assembly toward said stopped position.
    Type: Grant
    Filed: April 27, 1977
    Date of Patent: December 4, 1979
    Inventor: George C. Clarke
  • Patent number: 4159614
    Abstract: The rear wheels of a rotary mower are driven off the blade shaft by a compact and cylindrical speed reducer mounted directly on the rear wheels drive axle. The speed reducer is drive connected to the blade shaft by a variable pulley-belt system to provide an adjustment in the speed of the mower along the ground, whereas start and stop of the mower is controlled by a wrap-around spring type clutch on the speed reducer.
    Type: Grant
    Filed: October 27, 1977
    Date of Patent: July 3, 1979
    Assignee: AMF Incorporated
    Inventors: George A. Thomas, C. Dean Peterson
  • Patent number: 4143504
    Abstract: A harvester for a multirow corn crop comprises a cutting head whose leading edge is formed with individual cutting members at each of a plurality of channels. The channels run rearwardly and unite at the rear portion of the head. Each of the channels is provided along one flank with a yieldable wall and along the other flank with a chain having entraining members reaching substantially across the full width and height of the channel. The entraining members are preferably of L-shape in plan view and have a pair of friction strips resting against the respective wall of the channel above and below the chains.
    Type: Grant
    Filed: January 25, 1977
    Date of Patent: March 13, 1979
    Assignee: Veb Kombinat Fortschritt Landmaschinen Neustadt In Sachsen
    Inventors: Christian Noack, Klaus Oliva, Theodor Eistert, Bernd Zumpf, Hans P. Spaida, Gunter John, Frank Pietschmann, Pal Boltizar, Istvan Fabry, Csongor Vida, Lajos Lakos, Matyas Klement
  • Patent number: 4115983
    Abstract: A self-propelled forage harvester has a forward transversely elongated header that includes a plurality of row units mounted on the header frame for removing crop material from a plurality of rows as the machine advances and delivering it rearwardly to a transverse auger on the header, which converges the crop and delivers it rearwardly to the forage harvester through a central crop transfer opening in the header. Each row unit includes a supporting structure extending forwardly in cantilever fashion from the header frame and a pair of belt type gathering elements having opposite rearwardly moving inner runs with intermeshing projections that clamp the stalks of row planted crops to move the stalk rearwardly. A reciprocating cutter is mounted on the supporting structure below the forward intake ends of each pair of gathering elements and the rearward discharge end of each pair gathering elements is disposed directly under the auger to positively feed the butt of the severed stalk under the auger.
    Type: Grant
    Filed: August 19, 1974
    Date of Patent: September 26, 1978
    Assignee: Deere & Company
    Inventors: Theodore Marion Barnes, Joseph John Shindelar, Merlyn Duane Bass, Henry William Suechting, Jr.
  • Patent number: 4091602
    Abstract: Disclosed is a crop harvesting machine for collecting stalk crops having seed pods near ground level. The harvester includes a horizontally disposed reel structure. As the reel rotates, bat-assemblies thereon successively urge the stalks of the crop against a cutter bar which severs them close to the ground. The cutter bar and its associated sickle drive assembly accommodate the irregular variations in ground contour, by reason of the interposition of leaf springs between the cutter bar assembly and the cutter carrying platform. When not required the flexible cutter bar feature can be disabled. Sensing fingers mounted on the underside of the machine relay information to an automatic elevational control unit assuring that the cutter carrying platform closely follows the contour of the ground.
    Type: Grant
    Filed: January 10, 1977
    Date of Patent: May 30, 1978
    Assignee: Avco Corporation
    Inventors: Millard M. Williams, Robert A. Stelzer
  • Patent number: 4009556
    Abstract: A crop harvesting vehicle including a self-propelled chassis and a crop harvesting header coupled on the chassis. The header includes a variety of crop handling elements such as a cutter, a reel, a crop-consolidating conveyor, and conditioning rolls which cooperate in a hay windrowing operation. The chassis includes drive wheels driveable from an engine on the chassis through a hydrostatic drive system including two pumps and two motors hydraulically interconnected. The crop handling elements on the header are drivable through a third pump hydraulically connected to a motor on the header. The three pumps are mounted on the chassis with the rotary input drives thereof successively interconnected in coaxial alignment enabling the pumps to be simultaneously driven through a direct common input from the vehicle engine.
    Type: Grant
    Filed: May 8, 1975
    Date of Patent: March 1, 1977
    Assignee: International Harvester Company
    Inventor: Herbert W. Molzahn